參數(shù)資料
型號： DSP56303VL100B1
廠商： Freescale Semiconductor
文件頁數(shù)： 12/108頁
文件大?。?/td> 0K
描述： IC DSP 24BIT 100MHZ 196-BGA
標準包裝： 630
系列： DSP563xx
類型： 定點
接口： 主機接口，SSI，SCI
時鐘速率： 100MHz
非易失內存： ROM（576 B）
芯片上RAM： 24kB
電壓 - 輸入/輸出： 3.30V
電壓 - 核心： 3.30V
工作溫度： -40°C ~ 100°C
安裝類型： 表面貼裝
封裝/外殼： 196-LBGA
供應商設備封裝： 196-MAPBGA（15x15）
包裝： 托盤
Interrupt and Mode Control
DSP56303 Technical Data, Rev. 11
Freescale Semiconductor
1-7
1.6 Interrupt and Mode Control
The interrupt and mode control signals select the chip operating mode as it comes out of hardware reset. After
RESET is deasserted, these inputs are hardware interrupt request lines.
Table 1-9.
Interrupt and Mode Control
Signal Name
Type
State During
Reset
Signal Description
RESET
Input
Schmitt-trigger
Input
Reset—Places the chip in the Reset state and resets the internal phase
generator. The Schmitt-trigger input allows a slowly rising input (such as a
capacitor charging) to reset the chip reliably. When the RESET signal is
deasserted, the initial chip operating mode is latched from the MODA, MODB,
MODC, and MODD inputs. The RESET signal must be asserted after powerup.
MODA
IRQA
Input
Schmitt-trigger
Input
Mode Select A—MODA, MODB, MODC, and MODD select one of 16 initial
chip operating modes, latched into the Operating Mode Register when the
RESET signal is deasserted.
External Interrupt Request A—After reset, this input becomes a level-
sensitive or negative-edge-triggered, maskable interrupt request input during
normal instruction processing. If the processor is in the STOP or WAIT standby
state and IRQA is asserted, the processor exits the STOP or WAIT state.
MODB
IRQB
Input
Schmitt-trigger
Input
Mode Select B—MODA, MODB, MODC, and MODD select one of 16 initial
chip operating modes, latched into the Operating Mode Register when the
RESET signal is deasserted.
External Interrupt Request B—After reset, this input becomes a level-
sensitive or negative-edge-triggered, maskable interrupt request input during
normal instruction processing. If the processor is in the WAIT standby state and
IRQB is asserted, the processor exits the WAIT state.
MODC
IRQC
Input
Schmitt-trigger
Input
Mode Select C—MODA, MODB, MODC, and MODD select one of 16 initial
chip operating modes, latched into the Operating Mode Register when the
RESET signal is deasserted.
External Interrupt Request C—After reset, this input becomes a level-
sensitive or negative-edge-triggered, maskable interrupt request input during
normal instruction processing. If the processor is in the WAIT standby state and
IRQC is asserted, the processor exits the WAIT state.
MODD
IRQD
Input
Schmitt-trigger
Input
Mode Select D—MODA, MODB, MODC, and MODD select one of 16 initial
chip operating modes, latched into the Operating Mode Register when the
RESET signal is deasserted.
External Interrupt Request D—After reset, this input becomes a level-
sensitive or negative-edge-triggered, maskable interrupt request input during
normal instruction processing. If the processor is in the WAIT standby state and
IRQD is asserted, the processor exits the WAIT state.
Note: These signals are all 5 V tolerant.
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